Schiff, Shamos, Harbour sign on

Trio will portray hustling real estate agents who work with the characters played the previously announced topliners Al Pacino and Bobby Cannavale in the David Mamet play, to be helmed by Daniel Sullivan.

Schiff (“The West Wing”), cast as George Aaronow, makes his Rialto debut in the production. Harbour, playing John Williamson, previously appeared opposite Pacino in the 2010 Rialto production of “The Merchant of Venice,” also helmed by Sullivan, while Shamos, tapped to appear as James Lingk, is currently on the Rialto in the limited run of “Clybourne Park,” a stint that earned him a Tony nomination in the spring.